docker run -tid -p 80:80 --name flask -w /usr/src/app  python:3 /bin/bash
docker cp ../flask-blog-master/ flask:/root
docker exec -ti flask bash -c 'pip install flask'
docker exec -ti flask bash -c 'cd /root/flask-blog-master&&export FLASK_APP=blog.py && python3 -m flask run --host=0.0.0.0 --port=80'
